And many more
We have worked with
"If I don't understand how your business generates revenue, how you compete, or what keeps your CFO up at night, I have no business advising you on sustainability. Every client should finish an engagement with more clarity and confidence than they expected — because the advice was worth more than the fee."
Bjarni Herrera, CEO of Accrona
Bjarni Herrera
Founder & CEO & Senior Advisor
Sustainability and sustainable finance advisory, with deep experience across financial markets, corporate governance, and M&A. Former COO of CICERO Shades of Green (acquired by S&P Global), founder of a Nordic advisory firm acquired by KPMG, and board secretary at Arion Bank during the 2008 financial crisis. Author of Supercharging Sustainability. Runner and skier.
Hildur Karen Haraldsdottir
Director
Legal and corporate finance, with 15 years in complex Nordic market transactions. Former Legal Counsel at Íslandsbanki Corporate Finance. Certified Securities Broker and Sustainable Investing Certificate holder. Master of Law, University of Reykjavik and University of Glasgow. Golfer and diversity advocate.
Karin Gambe
Director
Climate and ESG risk, prudential oversight, and quantitative modelling. 15+ years across Handelsbanken, Bank of New York, and EY, advising major financial institutions. MSc Mathematics, Stockholm University. Ski-tourer and cyclist.
Karen Torres Sánchez
Research Analyst
Environmental engineering, sustainability research, and data analysis. Experience at Bosch and TU Dresden in environmental systems and process engineering. BEng Environmental Engineering, Universidad del Valle and TU Dresden. Colombian, bilingual in Spanish and German.
Associate
Business development and client relationships in sustainability and sustainable finance. Former professional American football player in the European League of Football. BA International Business & Management, Dickinson College. Bilingual in German and English.
Nuno Teófilo
Marketing Associate
Marketing and communications across digital, content, and brand strategy. Experience at JE Europe and across agencies in Portugal and Italy. Master's in Marketing, University of Coimbra. Portuguese at heart.
Team
Who you meet is who does the work. Every time. | One team. One Accrona.
Previous employers
Vision
An economy where sustainability and business are one.
North Star
Our north star is simple: our clients choose us again.
That single metric tells us whether we are listening well enough, delivering well enough, and building relationships that last.
Mission
We help clients cut through noise with massive clarity, enabling good business decisions through senior advisors who bridge sustainability and sustainable finance.That single metric tells us whether we are listening well enough, delivering well enough, and building relationships that last.
Values
Trust
We keep our word and speak plainly, even when it's uncomfortable.
Growth
We seek feedback, internalise it, and turn it into better performance. Continuous learning is not optional.
We examine deeply before we advise. Accuracy and substance over appearance and speed.
Excellence
Focus
We reduce noise, identify the signal, and act on it with discipline. We spend time on what is material.
Careers
We hire people who do what they say they'll do, deliver work that holds up under scrutiny, build real relationships, and put the team before themselves. If that sounds like you, we'd like to hear from you.
Open applications
Even when we're not actively hiring, we want to know you.
Internships
Real client work from day one, alongside senior advisors.
Professional transition program
For experienced professionals who want to contribute while transitioning to something else.